Sarah worked 8 more hours than Heidi. Write an expression that represents the number of
hours each student works in term of Sarah.

Which keywords are essential to write an
expression?

How many operations are needed for this expression?

Which variable should I use?

Heidi worked 20 hours how many hours did Sarah?

Abank gives 6.5% interest per year. what is the growth factor b in this situation?

Solve the problem. a student earned grades of c, a, b, and a in four different courses. those courses had these corresponding numbers of credit hours: 4, 5, 1, and 5. the grading system assigns quality points to letter grades as follows: a = 4, b = 3, c = 2, d = 1, and f = 0. compute the grade point average (gpa) and round the result to two decimal places. 3.40 3.50 8.75 2.18

The sum of 5consecutive even numbers is 100. what is the first number in this sequence?