Hi gfy010,Evaluate when x = 5
Evaluate 2a - 3 when a = -5
Evaluate -2a + 6b when a = 6 and b = -3
Not sure if it should be -12a + -18b tho No, you're right the first time.
Evaluate when x = -3
-9 Incorrect. Should be -1
Evaluate c - 3d when c - 1 and d = 1/3 Don't understand this one. What does c equal?
Or should it be c - 0.9d?
x + x^3 - 4 x^4 when x = 2
Not sure if this should be -54x No
5a + 3a^2 when a = -3
12 or 12a?Answer is 12
Find F when c = 15 in the formula F = 9C/5 + 32
F = 86 Incorrect. Should be 59
I'm not sure if I should leave the variables in or not.
See my results in red.