An expression is shown below:

4(m + 3 + 5m)

part a: write two expressions that are equivalent to the given expression. (3 points)

part b: show that one of your expressions in part a is equivalent to the given expression using algebraic properties. explain which properties you used. (4 points)

part c: show that your other expression from part a is equivalent to the given expression by substituting a number for m. (3 points)

Part A:4m + 12 + 20m

2 (2m + 6 + 10m)

Part B: 2 (2m + 6 + 10m) = 4(m + 3 + 5m)

4m + 12 + 20m = 4m + 12 + 20m

24m + 12 = 24m + 12

Part C: if m equals 2,

4(m + 3 + 5m)

compile it down

4(2 + 3 + 5 x 2)

4(5 + 5 x 2)

4(10 x 2)

4(20)

4 times 20

80

the dimensions are:

step-by-step explanation:

we want to find the dimensions of a rectangular box with volume of

we factor to obtain;

we rewrite the rightmost factor to obtain;

recall that:

we apply difference of two squares formula to obtain;

hence the dimensions are

126 maybe. sorry