Let x = -2 and y = 3. Evaluate 8x + 4y - 25

-29

Step-by-step explanation:

So we have the expression:

And we want to evaluate it for x=-2 and y=3. So, substitute:

Multiply:

Add:

Subtract:

And we're done!

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

14 ft 7 inches

step-by-step explanation:

since each model inch corresponds to 25 real inches, 7 model inches will correspond to

7×25" = 175"

at 12" per foot, that is 14 feet, 7 inches.