For each situation, identify the dependent and independent variables.
write a function in function notation, and use the function to solve the
problem.
6. a plumber charges $70 per hour plus $40 for the call. what does he
charge for 4 hours of work?
dependent:
solution:
independent
function:

The probability that a college student belongs to a health club is 0.3. the probability that a college student lives off-campus is 0.4. the probability that a college student belongs to a health club and lives off-campus is 0.12. find the probability that a college student belongs to a health club or lives off-campus. tip: p(a or b) = p(a) + p(b) - p(a and b) 0.54 0.58 0.70 0.82

Kelly is a salesperson at a shoe store, where she must sell a pre-set number of pairs of shoes each month. at the end of each work day the number of pairs of shoes that she has left to sell that month is given by the equation s=300-15x , where s is the number of pair of shoes kelly still needs to sell and x is the number of days she has worked that month. what is the meaning of the number 300 in this equation

What is the answer to this question? i'm a bit stumped. also how do i do it? 5(x - 4) = 2(x + 5)