Answer:
$350
Step-by-step explanation:
7*10=70
Multiply by cost
70*5=350
9
3x3=9
its nine bruhhhhhhhhhhhhh
x = -6
-5(x + 3) = 15
Distribute the -5
-5x -15 =15
Add 15 to each side
-5x-15+15 =15+15
-5x = 30
Divide each side by -5
-5x/-5 = 30/-5
x =-6