Simplify the algebraic expression:

7(x + 3)20

Cassie is traveling 675 miles today to visit her brother and his family. so far, she has stopped for gas three times. at the first stop, she put in 7.1 gallons of gas and paid $23.79. at her second stop, she put in 5.8 gallons of gas and paid $19.08. and, at the third stop, 6.6 gallons and paid $20.39. at which stop did casey pay the most for gas?

Given f(x)= 9x+1 and g(x)=x^3, choose the expression (f*g)(x)

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?