Fiona finds 1 shell on her first day at the beach. every day that week, she finds twice as many shells as she did the day before. how many shells does fiona find on the seventh day?

128

Step-by-step explanation

Multiply 1 and 2 and keep multiplying the anser by 2.

step-by-step explanation:

options

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116