Donald has x xx twenty-dollar bills and 1 11 ten-dollar bill.

11

step-by-step explanation:

32.50-7.50=25

225/25=11

thus, the first answer choice, y = sec x, is the correct one

to find the perimeter, you add up all the lengths of the sides. in this case you would have to add up 18+22+40+80 which equals 160.

c.

step-by-step explanation:

simple you would first have to get   a negative number where as 1 to be multiplied by 24 and then you would have to multiply 6 time 4 and then repeat that process until you reach your term