Write the following expression as a function of a positive acute angle. tan 245 a. tan65°
b. -tan65°
c. tan115°

ik its not b bc I got it incorrect so it is either a or c but I'm not sure please help

The graph represents the gallons of water in a water tank with respect to the number of hours since it was completely filled

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?

Frank has a devised a formula for his catering business that calculates the number of meatballs he needs to prepare. the formula is m=4a+2c, where c=number of children; m=number of meatballs; a=number of adults. how many meatballs are required for a party of 10 adults and 5 children?