To measure the depth of a pond, we put a 5 m stick vertically into the water. 0.3 m of the stick went into the earth below
the pond and 1.29 m was above the water of the pond. What
is the depth of this pond?
___m

Which graph represents the following piecewise defined function?

Define multiplicative inverse. give an example of a number and its multiplicative inverse.

Acompany that manufactures and sells guitars made changes in their product range. from the start they had 20 models. then they reduced the number of models to 15. as a result, the company enjoyed a 10% increase in turnover. - how much did the stock level change? in (%)