The first one is the square root of 9 and 16
multiply
0.3568 x 0.042 = 0.0149856 (remember to combine the amount of decimal point places before moving).
C: 7 is your answer
hope this helps
Area=legnth times width=31
the frame must go around the frame with equal legnth, x
so
the total area (meaning the frame +picture) is 5+x by 6+x
31=(5+x)(6+x)
expand
31=30+11x+x^2
minus 31 both sides
0=-1+11x+x^2
x^2+11x-1=0
answer is third one
