You find an online service that pays you to fill out surveys. They will give you 25 cents per
completed. After you complete 52 surveys, you have $39.50 in your
piggy bank. How much money did you start with?

If a • b*2 = 1.8 x 10*-7, and c•b/d = 7.2 x 10*-4, find the value of a•d*2/c*2

"curse these trig-loving pirates! " devora mutters as she looks at the map. then, after thinking for a moment, she walks back to the entrance of the secret cave, measuring 48 meters along the way. after performing a calculation, devora walks back to the empty treasure, faces the entrance, and turns a certain number of degrees to her left before walking 89 meters to the treasure. supposing that the angle at the cave entrance is acute and that devora's calculations were correct, how many degrees did she turn?

There are 85 apples on the big tree, john picked out 15%. how many did john pick out?