Six grapefruit cost as much as ten oranges. the cost of a dozen grapefruit and two dozen oranges is $33. how many cents does one orange cost?

Hillel is juggling flaming torches to raise money for charity. his initial appearance raises $500\$500 $500 , and he raises $15\$15 $15 for each minute of juggling performance. the amount rr r of money hillel raises is a function of tt t , the length of his performance in minutes. write the function's formula.

The square root of 9x plus 7 plus the square rot of 2x equall to 7

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry