Find each unit rate. compare the rates. brahim earned $3000 in 6 weeks, and amanda earned $2500 in 7 weeks. a. brahim: $500/wk and amanda: $357.14/wk. amanda has a greater rate. b brahim: $500/wk and amanda: $357.14/wk. brahim has a greater rate. c. brahim: $357.14/wk and amanda: $500/wk. amanda has a greater rate. d. brahim: $357.14/wk and amanda: $500/wk. brahim has a greater rate.

in 4 days he will run   12/14

step-by-step explanation:

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.