A contractor bought 6.4 ft2 of sheet metal. She has used 2.3 ft2 so far and has $65.60 worth of sheet metal remaining. The equation 6.4x -2.3x = 65.6 represents how much sheet metal is
remaining and the cost of the remaining amount. How much does sheet metal cost per square
foot?

a.

step-by-step explanation:

step 1 distribute 2 to every term in the parentheses

step 2 add 10 on both sides of the equal sign

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116

b. 2 and 4

step-by-step explanation:

fd

step-by-step explanation: