Nico is saving money for his college education. He invests some money at 8%, and $1400 less than that amount at 7%. The investme
nt produced a total of $262 interests in 1 yr. How much did he invest at each rate ?
1 answer:
Answer:
.05x+.04(x-1,900)=185
.05x+.04x-76=185
.09x=185+76
.09x=261
x=261/.09
Step-by-step explanation:
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(7x^2-2) - (2x^2 - 5x + 3)
Answer:
5(x^2+x-1)
See the graph in the attached image.
Answer:
Step-by-step explanation:
f(x) = x^2 + 3x - x/2
f(x) = x^2 + 2.5x
- 3x - 1/2x =
- 6x/2 - 1/2x =
- 5x/2 =
- 2.5x
f(6) = 6^2 + 2.5*6
f(6) = 36 + 15
f(6) = 51
