Each time Cheryl runs, she runs 3 miles. On Saturdays, she always bikes for 10 miles. If she rides and runs a total of 22 miles in a week, solve to find out how many times Cheryl goes running each week

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?