he Computer Club spends $19.95 on mouse pads for new members. The mouse pads are $0.95 each. How many new members does the club have?

How do you solve a question like this?

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

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?