When is substitution a useful method for solving systems of equations?

Janet runs one fourth of a half of Mile relay race what fraction of a mile does Janet run

Find radius of a circle so that its area and circumference have same value.

Use a calculator to find the approximate value of arccos (0.77). A: 50.35° B: 37.6° C: 39.65° D: 100.71°

Ew also order t-shirts for the volunteers. He will order both adult - and child-sized t-shirts • Adult t-shirts are $5; child t-shirts are $2.50.

Describe how the graph of y = x2 can be transformed to the graph of the given equation. y = (x-10) 2+8

mrs. Walker increase the amount of fruit she eats everyday from 25 to 30 by what percentage did mrs. Walker increase the amount of fruit she eats

Jose worked n hours at $8.75 per hour. He made a total of $61.25. Write an expression that represents the total number of hours Jose worked

Which of the following is the correct translation for the expression x - 6? a number subtracted from 6 a negative number added to 6 the product of a number and - 6 the difference between a number and 6

F (x) = 4x2 - 24x + 20?

My question: Tia's car needs repairs. Honest Harry will charge $70 per hour plus $130 for the part. Lucky Lou will charge $80 per hour plus $40 for the part. How long is the job if the two costs are the same?