SOLUTION: Let f(a,b) = 2a - 3b^2 + 7. If f(b,3) = 90, then what is b?

SOLUTION: Let f(a,b) = 2a - 3b^2 + 7. If f(b,3) = 90, then what is b?

Algebra.Com

Question 1028648: Let f(a,b) = 2a - 3b^2 + 7. If f(b,3) = 90, then what is b?
Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!
==>
==> 2b - 27 + 7 = 90 ==> 2b - 20 = 90 ==> 2b = 110 ==> b = 55.
RELATED QUESTIONS
Let f(a,b) = 2a - 3b^2 + 7 + 5a^2 - 10a. If f(k,-3) = -10, then what is... (answered by ikleyn)

3b+2a(7+a b) then a=3,... (answered by Fombitz)

what is b: b+2+3b=90 (answered by EdenWolf)

If a�b = 2a - 3b for all real numbers a and b, what is... (answered by Fombitz)

If f(x) = 3x^2 - Bx + 4, and f(-1) = 12, what is the value of B? Let me give it a... (answered by josgarithmetic,ikleyn)

1/2a-1/3b; -a+2/3b;... (answered by ikleyn)

If a function f is defined by equation F(x,y)=(x^2.y^3),and F(a,b)=10 then what is the... (answered by Fombitz)

2a+3b-a-b= (answered by Nieleya)

a= -2 b=3 6a... (answered by bcampbell23669)