9.7 Solve a formula for a specific variable  (Page 5/9)

Solve the formula $-5x+y=\mathrm{-1}$ for $y.$

Solve the formula $4x+3y=7$ for $y.$

Solve the formula $3x+2y=11$ for $y.$

Solve the formula $x-y=\mathrm{-4}$ for $y.$

Solve the formula $x-y=\mathrm{-3}$ for $y.$

Solve the formula $P=2L+2W$ for $L.$

Solve the formula $P=2L+2W$ for $W.$

Solve the formula $C=\pi d$ for $d.$

Solve the formula $C=\pi d$ for $\pi .$

Solve the formula $V=LWH$ for $L.$

Solve the formula $V=LWH$ for $H.$

Converting temperature While on a tour in Greece, Tatyana saw that the temperature was $\text{40°}$ Celsius. Solve for $F$ in the formula $C=\frac{5}{9}\left(F-32\right)$ to find the temperature in Fahrenheit.

Converting temperature Yon was visiting the United States and he saw that the temperature in Seattle was $\text{50°}$ Fahrenheit. Solve for $C$ in the formula $F=\frac{9}{5}C+32$ to find the temperature in Celsius.

How has your attitude towards solving word problems changed as a result of working through this chapter? Explain.

Did the Problem Solving Strategy help you solve word problems in this chapter? Explain.

Three-fourths of the people at a concert are children. If there are $87$ children, what is the total number of people at the concert?

There are $9$ saxophone players in the band. The number of saxophone players is one less than twice the number of tuba players. Find the number of tuba players.

Reza was very sick and lost $\text{15\%}$ of his original weight. He lost $27$ pounds. What was his original weight?

Dolores bought a crib on sale for $\text{\$350}.$ The sale price was $\text{40\%}$ of the original price. What was the original price of the crib?

The sum of a number and three is forty-one. Find the number.

Twice the difference of a number and ten is fifty-four. Find the number.

One number is nine less than another. Their sum is twenty-seven. Find the numbers.

The sum of two consecutive integers is $-135.$ Find the numbers.

Francie has $\text{\$4.35}$ in dimes and quarters. The number of dimes is $5$ more than the number of quarters. How many of each coin does she have?

Scott has $\text{\$0.39}$ in pennies and nickels. The number of pennies is $8$ times the number of nickels. How many of each coin does he have?