A grade 7 class is going on a field trip to the Science Centre. The cost of the bus is $250. It costs $10 per student for admission, and an additional $7 per student to attend a session on Heat Transfer. Write an expression to represent the total cost and determine how much it will cost if 60 students attend.

For the equations below which statement is true ?

The constant of proportionality is always the where k is the constant of proportionality. additionally, you can find the constant of proportionality by finding the ratio for any point onasap

Answer asap ill give ! ’ a sample of radioactive material decays over time. the number of grams, y , of the material remaining x days after the sample is discovered is given by the equation y = 10(0.5)^x. what does the number 10 represents in the equation? a. the half-life of the radioactive material, in days b. the amount of the sample, in grams, that decays each day c. the time, in days, it will take for the samples to decay completely d. the size of the sample, in grams, at the time the material was discovered