Answer:
24
Step by-step explanation:
6x=3x-1+13
common like terms (-1+13)
6x=3x+12
subtract 3x on both sides
3x=12
divide 3x on both sides
x=4
insert 4 into equation 6*4=24
3(4)-1+13=24
Answer:
48.96
Step-by-step explanation:
Perform the two multiplications from left to right:
2.23x3.42x6.42 becomes:
7.6266 · 6.42, or
48.96
Answer:
The numbers are 14 and 10
Step-by-step explanation:
Let the numbers be

This implies that,


The sum of the numbers is 24.

Put equation (1) in (2)





Answer:
Recursive formula: 
Explicit formula: 
Step-by-step explanation:
Let n be the number of week,
be the number of albums Pam has on week n.
Every week she buys 3 new albums to keep her collection current, then

{The number of albums Pam has on week n is the number of albums Pam has previous week increased by 3}
This is a recursive formula.
Suppose initially Pam has 0 albums. Then the first week she has 3 albums, the third week - 6 albums and so on. Mathematically

The explicit formula is