Help with this question please

a) (f+g)(x)=6x^3-x^2+3x+4+8x^3-1

=14x^3-x^2+3x+3

b)(f+g)(2)=14(2)^2-4+6+3

=61

c)(f-g)(x)

=6x^3-x^2+3x+4-8x^3+1

= -2x^3-x^2+3x+5

d( (f-g)(-3)

= -2(-3)^3-(3)^2+9+5

=59

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!

its an acute right triangle

step-by-step explanation: