Factor x^3 + 3x^2 + 2x completely. completely.

x(x + 2)(x + 1)

Step-by-step explanation:

x^3 + 3x^2 + 2x

= x(x^2) + x(3x) + x(2)

= x(x^2 + 3x + 2)

= x(x + 2)(x + 1)

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.

26 is 33.33% of 78

step-by-step explanation:

26 is what percent of 78?

26 is p% of 78

equation: y = p% * x

solving our equation for p

p% = y/x

p% = 26/78

p = 0.3333

convert decimal to percent:

p% = 0.3333 * 100 = 33.33%