This week sam spent 2 3/4 hours on his homework. this was 2 2/3 less than last week. how many hours did he spend on homework last week

Sam spent 7 1/3 hours doing homework

Step-by-step explanation:

2 3/4 • 2 2/3 = 22/3

22/3 in decimal form is 7 1/3

step-by-step explanation:

quartic functions has x = –1 and x = –2 as its only two real zeroes:

f(x) = a(x+2)(x+1)   a: real number

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.