Which expression is equivalent to 5x + 5x for all values of x?
a) x + 10
b) 10 + 2x
c) (5 + 5)x
d) 2(x + 10)

What is the rate for one gallon of gasoline

Agroup of three friends order a combo meal which includes two slices of pizza and a drink each drink is priced at $2.50 the combined total of $31.50 how much is the cost of a slice of pizza

Factor the polynomial expression x6 – x3 – 20