Maria invested $4,000 at 3.5% simple interest. she left the principal invested for 57 months. robert invested $3,500 at 8.5% simple interest. he left the principal invested for 42 months. how much more total money did maria have than robert at the end of their investments

What is the quadric regression equation that fits these data

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?

What else equals 42 and 30 for multiply