I am unsure about the very last problem but I can help with the first two
1) (y+1)+4
If we combine the numbers 1 and 4, we get +5 and can isolate the numbers from the variable.
This would give us

2) (6*r)*7
remember that we do not have to explicitly state 6*r
Instead, we can write it as 6r
this helps us get rid of the parentheses
now we can write it as

I hope this helps!:)
Answer:
43.48
Step-by-step explanation:
Answer:
she bought 6 pounds of coffee
Step-by-step explanation:
80 minus 33.08=46.92
46.92÷7.82=6
so the answer is 6
Get your calculator and put alpha n y= and you are going to subtract the opposite way and the answer will be -1/13