Answer: 34.75
Step-by-step explanation:
Since we have the values of a to be -3, b= 4 and c= 2.5, then slot the figures in to give: 3(2.5×2.5) - 4 (-3) + 4
3 (6.25) + 12 + 4
18.75 + 12 + 4
=34.75
