What are the missing operations?
a. 48 ? (-8) = (-6)
b. (-40) ? 8 =(-5)
c. 12? (-2) = 14
d. 18 ?(-12) = 6
e. 18 ? (-20) = -2
f. 22? (-0.5) =-11

Does anyone know how to solve and graph this: 4 + | a + 2 | < 7the only part i don't get is the "4 +"

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 + 4x + 5 = 0

3. a sum of $2700 is to be given in the form of 63 prizes. if the prize is of either $100 or $25, find the number of prizes of each type.