Liza earned some money by taking care of her neighbor’s pet. She bought a drink for $1.95, and a concert ticket for $30. She bought a ring for $7.20, and then spent two-
thirds of the remaining money on a wireless speaker. If Liza has $38.50 left, write

and solve an equation to find the amount of money m Lisa earned by taking care of
her neighbor’s pet.

Ascientist has 50 grams of a radioactive element. the amount of radioactive element remaining after t days can be determined using the equation (1) after two days the scientist receives a second shipment of 50 grams of the same element. the equation used to represent the amount of shipment 2 remaining after t days is 10) - 50 which of the following is an equivalent form of the expression for the amount remaining in shipment 2? what’s the answer?