I believe this should be it.
x is equal to 20. hope this helped :)
Slope
y2-y1/x2-x1
11+5/7-3
4
now plug and chug with -5=4(3)+b
Answer:
80 cubes
Step-by-step explanation:
volume of one small cube = 1 /2 × 1 / 2 × 1 / 2
= 1 / 8cm^3
let x be the number of cubes needed
1 / 8 × x = 10
x = 10 × 8
x = 80 cubes