On 18 I think standard form is aX+bY=#
So, you would just subtract the 3 from the 5 and then your answer would be -3X+4Y=2

Step-by-step explanation:
Given functions are:

The operations on functions can be performed just as they are performed on polynomials
So

Combining like terms

Hence,

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The answer would be to because you were add 2+3 which equals six and then you multiply 6 times 3 which equals 12
Answer: its 180
Step-by-step explanation: length times width is the area. 15 times 12 is 180
Answer:
6s9t3
—————
x
Step-by-step explanation:
Step 1 :
t
Simplify —
x
Equation at the end of step 1 :
t
(((6 • (s5)) • —) • s4) • t2
x
Step 2 :
Equation at the end of step 2 :
t
(((2•3s5) • —) • s4) • t2
x
Step 3 :
Multiplying exponential expressions :
3.1 s5 multiplied by s4 = s(5 + 4) = s9
Equation at the end of step 3 :
6s9t
———— • t2
x
Step 4 :
Multiplying exponential expressions :
4.1 t1 multiplied by t2 = t(1 + 2) = t3