Step-by-step explanation:first round the fractions then add decide if it goes to 0,1/2,or 1
Means back the numbers into multiples of several small numbers
Like:; 1. We take LCM of 40
Just break into multiples of small number
2. We take LCM of 50
So LCM for 100 is 2×2×5×5
after that see the pairs in the LCM like 2×2 or 3×3 or 4×4(same numbers)
Then write the the single number in place of two multipled numbers
Like:; 2×2 is written as 2 // 3×3 is written as 3
So we can write 100 into 2×2×5×5 and then after selecting pairs (2×2)×(5×5)
write pairs in single number 2×5
And so we get 2×5=10
So we find root of 100 that is 10
Y = $15H + (.07 * S)
You didn't give the choices but this should be correct
Her electricity bill will be of 14256 pence.
On average, Tanya uses 90 units of electricity per week.
So, the total units of electricity in 12 weeks will be: units
One unit of electricity costs 13.2 pence.
Thus, the total cost for 1080 units will be: pence.
So, her electricity bill will be of 14256 pence.
Hope this helps!