m=4p+3
when p is increased by 2 (p+2), you'll have it as:
m=4(p+2) + 3
m = 4p + 8 + 3
m = 4p + 11
comparing the original expression and the attained expression after increasing p by 2, you'll have:
m(increase) = (4p + 11) - (4p + 3)
= 8
therefore m will increase by 8 when p is increased by 2
