Evaluate the following equation, when x=20:
x/5 + x – 10

For f(x)=2x+1 and g(x)= x^2 -7, find (f•g)(x)

Select the number of ways in which a line and a circle can intersect

Maria found the least common multiple of 6 and 15. her work is shown below. multiples of 6: 6, 12, 18, 24, 30, 36, 42, 48, 54, 60, . . multiples of 15: 15, 30, 45, 60, . . the least common multiple is 60. what is maria's error?