Answer:
169
Step-by-step explanation:
3(4)+1
=12+1
=13
f(g(4))
f(x)=x^2 ---- (13)^2
=13x13
=169
(a) 145.86 + 52.91 + 17.63 = 216.4
(b) 17.63/216.4 × 100% = 8.15%
(c) 52.91 + 17.63 / 216.4 × 100% = 32.60%
X=quarters, y=dimes
7+2x=y
0.25x+0.1y=10.15
we substitute the first equation into the second equation
0.25x+0.1(7+2x)=10.15
0.25x+0.7+0.2x=10.15
0.45x+0.7-0.7=10.15-0.7
0.45x=9.45
0.45x/0.45=9.45/0.45
x=21 quarters
7+2x=y, x=21
7+2(21)=y
7+42=y
y=49 dimes
check: 0.25x+0.1y=10.15 when x=21, y=49
21(0.25)=5.25 in quarters
49(0.1)=4.90 in dimes
5.25+4.90=10.15
The answer is 76
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